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Fix Excel for Mac Sign-In Errors: Remove Office License Files
Question details
The user is unable to sign into Excel for Mac because the application reports that another account from the same organization is already signed in, typically due to conflicting license files.
- Product
- Excel for Mac
- Device & OS
- macOS
- Scenario
- Attempting to log into Excel for Mac while managing multiple Microsoft 365 tenant accounts for work or school.
- Observed behavior
- Excel displays a sign-in error stating that another account from the organization is already signed in, blocking the primary account from authenticating successfully.
Ensure you have your correct Microsoft 365 account credentials handy, as clearing the license files will require you to sign back into all your Office applications.
Use the Microsoft Office License Removal Tool
This official utility automatically clears corrupted or conflicting license files and cached credentials from your Mac.
When switching between multiple Microsoft 365 tenants, cached credentials can cause persistent sign-in loops. The License Removal Tool safely wipes these old activation files without affecting your local spreadsheets.
Navigate to the official Microsoft Support website and download the Mac Office License Removal Tool (.pkg file).
Open the downloaded .pkg file from your Downloads folder and follow the on-screen prompts in the installation wizard.
When prompted, select 'Install' and enter your Mac administrator password to allow the tool to remove the existing license files.
Once the tool confirms the removal process is complete, restart your Mac to ensure all background Office cache is cleared.
Open Excel for Mac, click on 'Sign In', and enter the correct credentials associated with your primary Microsoft 365 account.
Clear Office Credentials from Keychain Access Manually
If the automated removal tool doesn't resolve the issue, manually deleting cached Office credentials in macOS Keychain Access can clear the conflict.
Switch to WPS Office for Mac to Avoid Licensing Conflicts
If managing multiple Microsoft 365 tenants and license files on your Mac is causing constant sign-in headaches, consider switching to WPS Office. It provides a highly compatible, easy-to-use alternative without the complex licensing authentication loops.
Frequently Asked Questions
Will removing Office license files delete my Excel spreadsheets?
No. The Microsoft Office License Removal Tool only clears the software activation data and cached login credentials from your Mac. Your personal files, spreadsheets, and documents remain completely safe and untouched.
Why does Excel for Mac say another account from my organization is already signed in?
This error typically occurs if you use multiple Microsoft 365 accounts or tenants on the same Mac. Cached credentials cross over, causing Excel to recognize a conflicting login token instead of your current primary account.
What should I do if the license removal tool doesn't fix the Excel sign-in error?
If the error persists after using the tool and restarting your Mac, try manually clearing Microsoft Office entries from your macOS Keychain Access app. If that still fails, you may need to completely uninstall and reinstall the Office suite.
